A smoke collection device and a range hood

By designing a multi-state smoke inlet chamber and negative pressure plate structure, the smoking coverage of the ultra-thin range hood is expanded, solving the problems of small smoking range and poor adaptability of existing ultra-thin range hoods, and achieving efficient smoking effects in multiple scenarios.

CN119957967BActive Publication Date: 2025-06-13HANGZHOU ROBAM APPLIANCES CO LTD
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Patent Information

Application Number
CN202510423145.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-04-07
Publication Date
2025-06-13
Estimated Expiration
2045-04-07

AI Technical Summary

Technical Problem

The smoke collection device of the existing ultra-thin range hood has a small smoking coverage area and is poorly adaptable to various cooking scenarios.

Method used

A smoke collection device is designed, including upper, lower and side smoke inlet chambers. Each smoke inlet chamber has a smoke inlet in different states, which can be switched in different states to adapt to the smoking needs of small and large smoke volumes, and the smoking coverage range is expanded through negative pressure plates and smoke guide plates.

Benefits of technology

It achieves effective smoking in both low and high smoke conditions, with a wide coverage area, adapting to the needs of diversified cooking scenarios.

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Abstract

The present invention discloses a smoke collection device, which includes a smoke collection cavity, an upper smoke inlet cavity rotatably connected to the upper part of the front surface of the smoke collection cavity at the top, a lower smoke inlet cavity fixed to the lower part of the front surface of the smoke collection cavity, and two side smoke inlet cavities respectively fixed to the two side parts of the front surface of the smoke collection cavity; the upper smoke inlet cavity and the lower smoke inlet cavity are respectively provided with an upper normally open smoke inlet and a lower normally open smoke inlet, and both are in an open state and can inhale oil fumes when the upper smoke inlet cavity is in any rotating position; the upper smoke inlet cavity, the lower smoke inlet cavity and the side smoke inlet cavity are respectively provided with an upper hidden smoke inlet, a lower hidden smoke inlet and a side hidden smoke inlet, and the three are in a closed state and cannot inhale oil fumes when the upper smoke inlet cavity is in a closed state, and are in an open state and can inhale oil fumes when the upper smoke inlet cavity is in other rotating positions. The present invention also discloses an oil fume machine. The beneficial effect of the present invention is that it can adapt to diversified cooking scenarios.
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Description

Technical Field

[0001] The present invention relates to a smoke collecting device and a range hood, belonging to the technical field of kitchen appliances. Background Art

[0002] The ultra-thin range hood is a modern kitchen appliance mainly used for sucking and exhausting the oil fumes and odors generated during the cooking process. Compared with the traditional range hood, the ultra-thin range hood is favored for its thin design and high efficiency, especially the smoke collecting device of the ultra-thin range hood, which has a relatively thin thickness and a simple structure, saves space, and is suitable for small kitchens or open kitchens.

[0003] In the prior art, the smoke collecting device of the ultra-thin range hood is limited by its simple structure, resulting in a small smoking coverage range, certain limitations in its smoking performance, and poor adaptability to diverse cooking scenarios. Summary of the Invention

[0004] The purpose of the present invention is to provide a smoke collecting device and a range hood, which have the smoking performance for small amounts of oil fumes and large amounts of oil fumes, and have a large smoking coverage range, and can adapt to diversified cooking scenarios.

[0005] The present invention is achieved by the following technical solutions.

[0006] A smoke collecting device includes a smoke collecting chamber, an upper smoke inlet chamber rotatably connected to the upper part of the front surface of the smoke collecting chamber, a lower smoke inlet chamber fixed to the lower part of the front surface of the smoke collecting chamber, and two side smoke inlet chambers respectively fixed to the two side parts of the front surface of the smoke collecting chamber. The rotation range of the upper smoke inlet chamber is limited between its closed state where it is retracted into the smoke collecting chamber and its open state where it extends forward of the smoke collecting chamber;

[0007] The upper smoke inlet chamber and the lower smoke inlet chamber are respectively provided with an upper normally open smoke inlet and a lower normally open smoke inlet, and both are in an open state and can inhale oil fumes at any rotation position of the upper smoke inlet chamber;

[0008] The upper smoke inlet chamber, the lower smoke inlet chamber, and the side smoke inlet chambers are respectively provided with an upper hidden smoke inlet, a lower hidden smoke inlet, and a side hidden smoke inlet. The three are in a closed state and cannot inhale oil fumes when the upper smoke inlet chamber is in the closed state, and are in an open state and can inhale oil fumes when the upper smoke inlet chamber is in other rotation positions.

[0009] As a further improvement of the present invention, when the upper smoke inlet chamber is in the closed state, the upper smoke inlet chamber and the lower smoke inlet chamber protrude forward relative to the two side smoke inlet chambers, and the upper smoke inlet chamber and the lower smoke inlet chamber form a complete outer covering structure that covers most of the front area of the smoke collecting chamber.

[0010] As a further improvement of the present invention, the upper normally-open smoke inlet is arranged at two side parts of the upper smoke inlet cavity, and the lower normally-open smoke inlet is arranged at two side parts of the lower smoke inlet cavity. When the upper smoke inlet cavity is in a closed state, the protruding part of the upper normally-open smoke inlet relative to the side smoke inlet cavity is exposed, and two side smoke inlet parts located on both sides of the outer covering structure are formed with the lower normally-open smoke inlet.

[0011] As a further improvement of the present invention, the upper hidden smoke inlet is arranged on the inner surface of the upper smoke inlet cavity and is blocked by the front surface of the smoke collecting cavity when the upper smoke inlet cavity is in a closed state; the lower hidden smoke inlet is arranged at the top of the lower smoke inlet cavity and is blocked by the upper smoke inlet cavity when the upper smoke inlet cavity is in a closed state.

[0012] As a further improvement of the present invention, an opening is arranged on the inner surface of the upper smoke inlet cavity, a negative pressure plate is arranged inside the upper smoke inlet cavity corresponding to the opening, and there is a gap between the edge of the negative pressure plate and the corresponding edge of the opening, and this gap forms the upper hidden smoke inlet.

[0013] As a further improvement of the present invention, the side hidden smoke inlet is arranged on the inner side surface of the side smoke inlet cavity facing the upper smoke inlet cavity and is blocked by the side part of the upper smoke inlet cavity when the upper smoke inlet cavity is in a closed state.

[0014] As a further improvement of the present invention, the upper smoke inlet cavity forming the outer covering structure is arranged vertically, and the lower smoke inlet cavity is inclined forward from its bottom to its top to expand the smoke inlet range of the side smoke inlet part in the front-rear direction.

[0015] As a further improvement of the present invention, the two side parts of the upper smoke inlet cavity are formed by gradually converging from the top end to the bottom end, and the two side parts of the lower smoke inlet cavity are formed by gradually converging from the bottom end to the top end to expand the smoke inlet range of the side smoke inlet part in the left-right direction.

[0016] As a further improvement of the present invention, the front surface of the side smoke inlet cavity is inclined forward from the bottom to the top to form a smoke guiding plate for increasing the rising resistance of the oil fume and guiding the oil fume to the side smoke inlet part.

[0017] An oil fume extractor includes the smoke collecting device and the fan device, and the fan device is connected to the top of the smoke collecting device.

[0018] Advantages of the present invention:

[0019] When the upper smoke inlet cavity is in the closed state, the smoke collection device can suck in smoke through the upper normally open smoke inlet, the lower normally open smoke inlet, enabling the smoke collection device to have the performance of sucking in a small amount of smoke; when the upper smoke inlet cavity is in the closed state, the smoke collection device can suck in smoke through the upper normally open smoke inlet, the lower normally open smoke inlet, the upper hidden smoke inlet, the lower hidden smoke inlet and the side hidden smoke inlet, enabling the smoke collection device to have the performance of sucking in a large amount of smoke. And since it extends forward when the upper smoke inlet cavity is in the open state, its smoke suction coverage range is expanded. Therefore, when the user is cooking and the amount of generated oil fume is small, the oil fume can be sucked away without controlling the opening of the upper smoke inlet cavity. When the amount of generated oil fume is large, controlling the opening of the upper smoke inlet cavity can increase the number of smoke inlets and expand the smoke suction coverage range, thus meeting the smoke suction requirements for a large amount of oil fume. Description of the Drawings

[0020] The following will describe in detail the preferred embodiments of the present invention with the help of the drawings to facilitate understanding of the purpose and advantages of the present invention, where:

[0021] Figure 1 It is a schematic structural view of the smoke collection device when the upper smoke inlet cavity is in the open state and from one perspective;

[0022] Figure 2 It is a schematic structural view of the smoke collection device when the upper smoke inlet cavity is in the open state and from another perspective;

[0023] Figure 3 It is a schematic structural view of the smoke collection device when the upper smoke inlet cavity is in the closed state;

[0024] Figure 4 It is a schematic view of the smoke collection device sucking in smoke when the upper smoke inlet cavity is in the closed state;

[0025] Figure 5 It is a schematic view of the smoke collection device sucking in smoke when the upper smoke inlet cavity is in the open state;

[0026] Figure 6 It is a schematic structural view of the range hood. Detailed Description of the Embodiments

[0027] The following will further describe the present invention in detail according to the drawings and embodiments.

[0028] The orientation terms such as upper, lower, left, right, front, back, front side, back side, top, bottom, etc. mentioned or possibly mentioned in this specification are defined relative to the structures shown in the respective drawings. The terms "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component. They are relative concepts and may accordingly change depending on their different positions and different usage states. Therefore, these or other orientation terms should not be construed as restrictive terms.

[0029] Implementation Case 1:

[0030] A smoke collection device, referring to Figures 1-5 , includes a smoke collection chamber 1, an upper smoke inlet chamber 2, a lower smoke inlet chamber 3, and two side smoke inlet chambers 4. Among them, the top of the upper smoke inlet chamber 2 is rotatably connected to the upper part of the front of the smoke collection chamber 1, the lower smoke inlet chamber 3 is fixed to the lower part of the front of the smoke collection chamber 1, and the two side smoke inlet chambers 4 are respectively fixed to the two side parts of the front of the smoke collection chamber 1. The upper smoke inlet chamber 2, the lower smoke inlet chamber 3, and the two side smoke inlet chambers 4 are all connected to the smoke collection chamber 1 in the air path, so that the upper smoke inlet chamber 2, the lower smoke inlet chamber 3, and the two side smoke inlet chambers 4 can all suck in oil fume and flow into the smoke collection chamber 1. The upper smoke inlet chamber 2 is set with a rotation range and has two limit states. One limit state is that the upper smoke inlet chamber 2 is retracted into the smoke collection chamber 1, which is the closed state of the upper smoke inlet chamber 2, and the other limit position is that the upper smoke inlet chamber 2 extends out towards the smoke collection chamber 1, which is the open state of the upper smoke inlet chamber 2. The rotation range of the upper smoke inlet chamber 2 is between the closed state and the open state.

[0031] When the upper smoke inlet chamber 2 is in the closed state, it is retracted into the upper part of the front of the smoke collection chamber 1, while the lower smoke inlet chamber 3 is fixed to the lower part of the front of the smoke collection chamber 1, and the two side smoke inlet chambers 4 are fixed to the side parts of the front of the smoke collection chamber 1, so that the smoke collection device as a whole presents an upright flat structure, and belongs to a typical ultra-thin range hood in terms of structural form.

[0032] The upper smoke inlet chamber 2 and the lower smoke inlet chamber 3 are respectively provided with an upper normally open smoke inlet 2a and a lower normally open smoke inlet 3a, and both are in the open state and can suck in oil fume when the upper smoke inlet chamber 2 is in any rotation position. The upper smoke inlet chamber 2, the upper smoke inlet chamber 2, and the side smoke inlet chamber 4 are respectively provided with an upper hidden smoke inlet 2b, a lower hidden smoke inlet 3b, and a side hidden smoke inlet 4a. The three are in the closed state and cannot suck in oil fume when the upper smoke inlet chamber 2 is in the closed state, and are in the open state and can suck in oil fume when the upper smoke inlet chamber 2 is in other rotation positions.

[0033] When the upper smoke inlet cavity 2 is in the closed state, the smoke collecting device can smoke through the upper normally open smoke inlet 2a and the lower normally open smoke inlet 3a, so that the smoke collecting device has the performance of smoking with a small amount of smoke; when the upper smoke inlet cavity 2 is in the closed state, the smoke collecting device can smoke through the upper normally open smoke inlet 2a, the lower normally open smoke inlet 3a, the upper hidden smoke inlet 2b, the lower hidden smoke inlet 3b and the side hidden smoke inlet 4a, so that the smoke collecting device has the performance of smoking with a large amount of smoke, and since the upper smoke inlet cavity 2 extends forward when it is in the open state, its smoking coverage range is expanded. Therefore, when the user is cooking and the amount of fume generated is small, the fume can be sucked away without controlling the opening of the upper smoke inlet cavity 2, and when the amount of fume generated is large, controlling the opening of the upper smoke inlet cavity 2 can increase the number of smoke inlets and expand the smoking coverage range, so as to meet the smoking requirements for a large amount of fume.

[0034] In this embodiment, when the upper smoke inlet cavity 2 is in the closed state, the upper smoke inlet cavity 2 and the lower smoke inlet cavity 3 protrude forward relative to the two side smoke inlet cavities 4, and the upper smoke inlet cavity 2 and the lower smoke inlet cavity 3 form a complete outer covering structure 5 that covers most of the front area of the smoke collecting cavity 1. Since the upper smoke inlet cavity 2 and the lower smoke inlet cavity 3 form a complete outer covering structure 5 in the closed state, the smoke collecting device is divided into two parts, namely the smoke collecting cavity 1 and the outer covering structure 5 in this state, which can not only improve the structural simplification of the smoke collecting device, but also block the local structures of the upper smoke inlet cavity 2 and the lower smoke inlet cavity 3, playing a role in protecting the structure.

[0035] In this embodiment, the upper normally open smoke inlet 2a is arranged on the two sides of the upper smoke inlet cavity 2, and the lower normally open smoke inlet 3a is arranged on the two sides of the lower smoke inlet cavity 3. Since the top of the upper smoke inlet cavity 2 is rotatably connected to the upper part of the front of the smoke collecting cavity 1, when the upper smoke inlet cavity 2 rotates to any state within its rotation range, the lower normally open smoke inlet 3a on the two sides of the lower smoke inlet cavity 3 is always in the open state and can suck in fume. When the upper smoke inlet cavity 2 is in the closed state, since it protrudes forward relative to the two side smoke inlet cavities 4, the parts of the upper normally open smoke inlets 2a on the two sides of the upper smoke inlet cavity 2 that protrude relative to the side smoke inlet cavities 4 are exposed. Therefore, the upper normally open smoke inlets 2a of the upper smoke inlet cavity 2 and the lower normally open smoke inlets 3a of the lower smoke inlet cavity 3 can smoke whether the upper smoke inlet cavity 2 is in the open state or the closed state. Moreover, when the upper smoke inlet cavity 2 is in the closed state, the upper normally open smoke inlets 2a and the lower normally open smoke inlets 3a form two side smoke inlet parts 5a located on both sides of the outer covering structure 5. When the upper smoke inlet cavity 2 is in the closed state, the fume generated on the stove can be sucked into the smoke collecting cavity 1 from both sides of the outer covering structure 5 by the side smoke inlet parts 5a.

[0036] In this embodiment, the upper hidden smoke inlet 2b is arranged on the inner surface of the upper smoke inlet cavity 2 and is blocked by the front surface of the smoke collecting cavity 1 when the upper smoke inlet cavity 2 is in the closed state. The lower hidden smoke inlet 3b is arranged at the top of the lower smoke inlet cavity 3 and is blocked by the upper smoke inlet cavity 2 when the upper smoke inlet cavity 2 is in the closed state. Therefore, when the upper smoke inlet cavity 2 is in the open state, it protrudes forward relative to the smoke collecting cavity 1, and the bottom, two sides of the upper smoke inlet cavity 2, the top and two sides of the lower smoke inlet cavity 3 can all suck in cooking fumes, enabling the smoke collecting device to achieve a multi-dimensional smoke inlet mode, with a relatively large distribution area and coverage range at the smoke inlet, so that the smoke collecting cavity 1 has good smoke suction performance for cooking environments with a large amount of cooking fumes.

[0037] In this embodiment, for the specific arrangement of the upper hidden smoke inlet 2b, an opening 21 is provided on the inner surface of the upper smoke inlet cavity 2. The opening 21 is formed near and along the edge of the inner surface of the upper smoke inlet cavity 2. A negative pressure plate 22 is provided inside the upper smoke inlet cavity 2 corresponding to the opening 21, and there is a gap between the edge of the negative pressure plate 22 and the corresponding edge of the opening 21. This gap has negative pressure and forms the upper hidden smoke inlet 2b. Since the negative pressure plate 22 is located inside the upper smoke inlet cavity 2, the direction of the opening 21 of the gap between the edge of the negative pressure plate 22 and the corresponding edge of the opening 21 is limited, so that the space between the negative pressure plate 22 and the opening 21 forms a negative pressure space. The coverage range of this negative pressure space is the range defined by the opening 21, so that its smoke suction range can be expanded, making the smoke suction range basically cover the side area. Moreover, the negative pressure intensity of the negative pressure space is the largest at the position corresponding to the upper hidden smoke inlet 2b, that is, the smoke suction ability at the edge of the negative pressure space is the strongest, effectively avoiding the escape of cooking fumes.

[0038] In this embodiment, when the upper smoke inlet cavity 2 is in the open state, the front surface of the smoke collecting cavity 1 has a protruding lower smoke inlet cavity 3 at the lower part and protruding side smoke inlet cavities 4 at the two sides respectively. The protruding degree of the lower smoke inlet cavity 3 is greater than that of the two side smoke inlet cavities 4, and the part of the front surface of the smoke collecting cavity 1 corresponding to the upper smoke inlet cavity 2 is recessed inward relative to the two side smoke inlet cavities 4. The side smoke inlet is arranged at the inner side of the side smoke inlet cavity 4 facing the upper smoke inlet cavity 2. When the upper smoke inlet cavity 2 is in the closed state, the two sides of the upper smoke inlet cavity 2 are attached to the corresponding inner sides of the two side smoke inlet cavities 4, so that the upper smoke inlet cavity 2 is blocked by the sides of the upper smoke inlet cavity 2 when it is in the closed state.

[0039] It should be noted that when the upper smoke inlet chamber 2 is in the open state, it extends forward to the front side of the smoke collecting chamber 1, so that the smoke inlet range of the upper smoke inlet chamber 2 expands forward. At this time, since the side hidden smoke inlet 4a of the two side smoke inlet chambers 4 is in the open state and can inhale oil fumes, and the positions of the two side hidden smoke inlets 4a are on both sides of the upper front of the smoke collecting hood, corresponding to the position of the upper normally open smoke inlet 2a when the upper smoke inlet chamber 2 is in the closed state, the side normally open smoke inlet can make up for the smoking performance of the upper smoke inlet chamber 2 when it is in the closed state.

[0040] In this embodiment, the upper smoke inlet chamber 2 forming the outer covering structure 5 is arranged vertically, and the lower smoke inlet chamber 3 is inclined forward from its bottom to its top, that is, the outer covering structure 5 is arranged vertically from its top to the middle as a whole, and then inclined backward from the front to the back at its bottom. Therefore, the smoke inlet range of the side smoke inlet part 5a in the front-back direction can be expanded.

[0041] In this embodiment, the two sides of the upper smoke inlet chamber 2 are gradually converged to the middle from the top end to the bottom end, and the two sides of the lower smoke inlet chamber 3 are gradually converged to the middle from the bottom end to the top end. Correspondingly, the side smoke inlet chamber 4 is gradually converged to the middle from the top end to the middle, and then gradually expands outward from the middle to the bottom end. The structural settings of the upper smoke inlet chamber 2 and the lower smoke inlet chamber 3 expand the smoke inlet range of the side smoke inlet part 5a of the outer covering structure 5 in the left-right direction.

[0042] The combination of the above two embodiments can expand the smoke inlet range of the two side smoke inlet parts 5a of the outer covering structure 5 in the front-back direction and the left-right direction. Therefore, the smoke collecting device has a good smoke inlet range when the upper smoke inlet chamber 2 is in the closed state, thus avoiding the escape of oil fumes.

[0043] In this embodiment, the front of the side smoke inlet chamber 4 is inclined forward from the bottom to the top. Due to this inclined setting, the oil fumes will contact this part during the upward floating process and slow down the speed of continuing to float upward. Under the negative pressure of the side smoke inlet part 5a, the oil fumes will flow laterally and be inhaled by the side smoke inlet part 5a. The front of the side smoke inlet chamber 4 forms a smoke guiding plate 4c for increasing the resistance of the oil fumes rising upward and guiding the oil fumes to the side smoke inlet part 5a, further improving the smoking ability of the upper smoke inlet chamber 2 when it is in the closed state and avoiding the escape of oil fumes.

[0044] Embodiment 2:

[0045] An oil fume extractor, referring to Figure 6, including a smoke collecting device and a fan device 6. Among them, the smoke collecting device is as shown in Embodiment 1. The fan device 6 is connected to the top of the smoke collecting device. A fan is provided in the fan device 6. When the fan starts, a negative pressure is formed at the corresponding smoke inlet of the smoke collecting device, so as to suck the oil fume into the smoke collecting cavity 1, then enter the fan device 6, and finally be discharged through the exhaust pipe (not shown in the figure).

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A smoke collecting device, characterized in that: It comprises a smoke collecting chamber (1), an upper smoke inlet chamber (2) rotatably connected at the top to the upper front part of the smoke collecting chamber (1), a lower smoke inlet chamber (3) fixed to the lower front part of the smoke collecting chamber (1), and two side smoke inlet chambers (4) respectively fixed to two side parts of the front part of the smoke collecting chamber (1), wherein the rotation range of the upper smoke inlet chamber (2) is limited between a closed state in which it is retracted into the smoke collecting chamber (1) and an open state in which it is extended toward the front side of the smoke collecting chamber (1); The upper smoke inlet chamber (2) and the lower smoke inlet chamber (3) are respectively provided with an upper normally open smoke inlet port (2a) and a lower normally open smoke inlet port (3a), both of which are in an open state and can inhale oil smoke when the upper smoke inlet chamber (2) is in any rotation position; The upper smoke inlet chamber (2), the lower smoke inlet chamber (3), and the side smoke inlet chamber (4) are respectively provided with an upper hidden smoke inlet port (2b), a lower hidden smoke inlet port (3b), and a side hidden smoke inlet port (4a); the three are in a closed state when the upper smoke inlet chamber (2) is in a closed state and cannot inhale oil smoke, and are in an open state when the upper smoke inlet chamber (2) is in other rotation positions and can inhale oil smoke.

2. The smoke collecting device according to claim 1, characterized in that: When the upper smoke inlet chamber (2) is in a closed state, the upper smoke inlet chamber (2) and the lower smoke inlet chamber (3) protrude forward relative to the two side smoke inlet chambers (4), and the upper smoke inlet chamber (2) and the lower smoke inlet chamber (3) form a complete outer covering structure (5) that covers most of the front area of ​​the smoke collecting chamber (1).

3. The smoke collecting device according to claim 2, characterized in that: The upper normally open smoke inlet (2a) is arranged on two side portions of the upper smoke inlet chamber (2), and the lower normally open smoke inlet (3a) is arranged on two side portions of the lower smoke inlet chamber (3); when the upper smoke inlet chamber (2) is in a closed state, a portion of the upper normally open smoke inlet (2a) protruding relative to the side smoke inlet chamber (4) is exposed, and forms two side smoke inlet portions (5a) located on both sides of the outer covering structure (5) with the lower normally open smoke inlet (3a).

4. The smoke collecting device according to claim 3, characterized in that: The upper hidden smoke inlet (2b) is arranged on the inner surface of the upper smoke inlet chamber (2), and is blocked by the front side of the smoke collecting chamber (1) when the upper smoke inlet chamber (2) is in a closed state; the lower hidden smoke inlet (3b) is arranged on the top of the lower smoke inlet chamber (3), and is blocked by the upper smoke inlet chamber (2) when the upper smoke inlet chamber (2) is in a closed state.

5. The smoke collecting device according to claim 4, characterized in that: An opening (21) is provided on the inner surface of the upper smoke inlet chamber (2), a negative pressure plate (22) is provided inside the upper smoke inlet chamber (2) at a position corresponding to the opening (21), and a gap is provided between the edge of the negative pressure plate (22) and the edge corresponding to the opening (21), and the gap forms the upper hidden smoke inlet port (2b).

6. The smoke collecting device according to claim 3, characterized in that: The side hidden smoke inlet (4a) is arranged on the inner side of the side smoke inlet cavity (4) facing the upper smoke inlet cavity (2), and is shielded by the side of the upper smoke inlet cavity (2) when the upper smoke inlet cavity (2) is in a closed state.

7. The smoke collecting device according to claim 3, characterized in that: The upper smoke inlet chamber (2) forming the outer covering structure (5) is arranged vertically, and the lower smoke inlet chamber (3) is arranged to be inclined forward from its bottom to its top, so as to expand the smoke inlet range of the side smoke inlet portion (5a) in the front-rear direction.

8. The smoke collecting device according to claim 3, characterized in that: The two side portions of the upper smoke inlet chamber (2) are gradually converged toward the middle from the top end to the bottom end, and the two side portions of the lower smoke inlet chamber (3) are gradually converged toward the middle from the bottom end to the top end, so as to expand the smoke intake range of the side smoke inlet portion (5a) in the left-right direction.

9. The smoke collecting device according to claim 3, characterized in that: The front side of the side smoke inlet chamber (4) is tilted forward from the bottom to the top, forming a smoke guide plate (4c) for increasing the rising resistance of the oil smoke and guiding the oil smoke to the side smoke inlet portion (5a).

10. A range hood, characterized in that: It comprises the smoke collecting device according to any one of claims 1 to 9, and a fan device (6), wherein the fan device (6) is connected to the top of the smoke collecting device.

Citation Information

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